-55.34% is the change from 721 to 322
Calculation steps:
[( 322 - 721 ) ÷ 721] x 100 = -55.34%
Formula
Percentage change = [(322 - 721) / 721] x 100
Subtract the new number by the original number
322 - 721 = -399
-399 ÷ 721 = -0.5533980582524272
-0.5533980582524272 x 100 = -55.34%