-89.18% is the change from 721 to 78
Calculation steps:
[( 78 - 721 ) ÷ 721] x 100 = -89.18%
Formula
Percentage change = [(78 - 721) / 721] x 100
Subtract the new number by the original number
78 - 721 = -643
-643 ÷ 721 = -0.8918169209431346
-0.8918169209431346 x 100 = -89.18%