-65.19% is the change from 721 to 251
Calculation steps:
[( 251 - 721 ) ÷ 721] x 100 = -65.19%
Formula
Percentage change = [(251 - 721) / 721] x 100
Subtract the new number by the original number
251 - 721 = -470
-470 ÷ 721 = -0.651872399445215
-0.651872399445215 x 100 = -65.19%