-67.96% is the change from 721 to 231
Calculation steps:
[( 231 - 721 ) ÷ 721] x 100 = -67.96%
Formula
Percentage change = [(231 - 721) / 721] x 100
Subtract the new number by the original number
231 - 721 = -490
-490 ÷ 721 = -0.6796116504854369
-0.6796116504854369 x 100 = -67.96%