117.58% is the change from 421 to 916
Calculation steps:
[( 916 - 421 ) ÷ 421] x 100 = 117.58%
Formula
Percentage change = [(916 - 421) / 421] x 100
Subtract the new number by the original number
916 - 421 = 495
495 ÷ 421 = 1.175771971496437
1.175771971496437 x 100 = 117.58%