-69.49% is the change from 721 to 220
Calculation steps:
[( 220 - 721 ) ÷ 721] x 100 = -69.49%
Formula
Percentage change = [(220 - 721) / 721] x 100
Subtract the new number by the original number
220 - 721 = -501
-501 ÷ 721 = -0.694868238557559
-0.694868238557559 x 100 = -69.49%