-22.97% is the change from 936 to 721
Calculation steps:
[( 721 - 936 ) ÷ 936] x 100 = -22.97%
Formula
Percentage change = [(721 - 936) / 936] x 100
Subtract the new number by the original number
721 - 936 = -215
-215 ÷ 936 = -0.2297008547008547
-0.2297008547008547 x 100 = -22.97%