-70.74% is the change from 721 to 211
Calculation steps:
[( 211 - 721 ) ÷ 721] x 100 = -70.74%
Formula
Percentage change = [(211 - 721) / 721] x 100
Subtract the new number by the original number
211 - 721 = -510
-510 ÷ 721 = -0.7073509015256588
-0.7073509015256588 x 100 = -70.74%