-20% is the change from 905 to 724
Calculation steps:
[( 724 - 905 ) ÷ 905] x 100 = -20%
Formula
Percentage change = [(724 - 905) / 905] x 100
Subtract the new number by the original number
724 - 905 = -181
-181 ÷ 905 = -0.2
-0.2 x 100 = -20%
Example