492.96% is the change from 71 to 421
Calculation steps:
[( 421 - 71 ) ÷ 71] x 100 = 492.96%
Formula
Percentage change = [(421 - 71) / 71] x 100
Subtract the new number by the original number
421 - 71 = 350
350 ÷ 71 = 4.929577464788732
4.929577464788732 x 100 = 492.96%