-41.75% is the change from 721 to 420
Calculation steps:
[( 420 - 721 ) ÷ 721] x 100 = -41.75%
Formula
Percentage change = [(420 - 721) / 721] x 100
Subtract the new number by the original number
420 - 721 = -301
-301 ÷ 721 = -0.4174757281553398
-0.4174757281553398 x 100 = -41.75%