987.5% is the change from 40 to 435
Calculation steps:
[( 435 - 40 ) ÷ 40] x 100 = 987.5%
Formula
Percentage change = [(435 - 40) / 40] x 100
Subtract the new number by the original number
435 - 40 = 395
395 ÷ 40 = 9.875
9.875 x 100 = 987.5%
Example