Input: To calculate the percentage change from 6000000 to 4500000, we need to follow the below steps:

Step 1: Find the difference between the two numbers.

6000000 - 4500000 = 1500000

Step 2: Divide the difference by the original number.

1500000 / 6000000 = 0.25

Step 3: Multiply the result by 100 to get the percentage change.

0.25 x 100 = 25%

Therefore, the percentage change from 6000000 to 4500000 is a decrease of 25%. This means that the new value is 25% less than the original value. To check this, we can calculate the new value as follows:

6000000 - (25% of 6000000) = 4500000

Hence, the new value is 4500000, which confirms that there is a 25% decrease from the original value of 6000000.