-66.3% is the change from 721 to 243
Calculation steps:
[( 243 - 721 ) ÷ 721] x 100 = -66.3%
Formula
Percentage change = [(243 - 721) / 721] x 100
Subtract the new number by the original number
243 - 721 = -478
-478 ÷ 721 = -0.6629680998613038
-0.6629680998613038 x 100 = -66.3%