-41.53% is the change from 720 to 421
Calculation steps:
[( 421 - 720 ) ÷ 720] x 100 = -41.53%
Formula
Percentage change = [(421 - 720) / 720] x 100
Subtract the new number by the original number
421 - 720 = -299
-299 ÷ 720 = -0.4152777777777778
-0.4152777777777778 x 100 = -41.53%