-29.54% is the change from 721 to 508
Calculation steps:
[( 508 - 721 ) ÷ 721] x 100 = -29.54%
Formula
Percentage change = [(508 - 721) / 721] x 100
Subtract the new number by the original number
508 - 721 = -213
-213 ÷ 721 = -0.29542302357836336
-0.29542302357836336 x 100 = -29.54%