2200% is the change from 40 to 920
Calculation steps:
[( 920 - 40 ) ÷ 40] x 100 = 2200%
Formula
Percentage change = [(920 - 40) / 40] x 100
Subtract the new number by the original number
920 - 40 = 880
880 ÷ 40 = 22
22 x 100 = 2200%
Example