-15.12% is the change from 721 to 612
Calculation steps:
[( 612 - 721 ) ÷ 721] x 100 = -15.12%
Formula
Percentage change = [(612 - 721) / 721] x 100
Subtract the new number by the original number
612 - 721 = -109
-109 ÷ 721 = -0.15117891816920942
-0.15117891816920942 x 100 = -15.12%