-8.18% is the change from 721 to 662
Calculation steps:
[( 662 - 721 ) ÷ 721] x 100 = -8.18%
Formula
Percentage change = [(662 - 721) / 721] x 100
Subtract the new number by the original number
662 - 721 = -59
-59 ÷ 721 = -0.08183079056865465
-0.08183079056865465 x 100 = -8.18%