-16.78% is the change from 721 to 600
Calculation steps:
[( 600 - 721 ) ÷ 721] x 100 = -16.78%
Formula
Percentage change = [(600 - 721) / 721] x 100
Subtract the new number by the original number
600 - 721 = -121
-121 ÷ 721 = -0.1678224687933426
-0.1678224687933426 x 100 = -16.78%
Example