117.81% is the change from 421 to 917
Calculation steps:
[( 917 - 421 ) ÷ 421] x 100 = 117.81%
Formula
Percentage change = [(917 - 421) / 421] x 100
Subtract the new number by the original number
917 - 421 = 496
496 ÷ 421 = 1.178147268408551
1.178147268408551 x 100 = 117.81%