307.52% is the change from 226 to 921
Calculation steps:
[( 921 - 226 ) ÷ 226] x 100 = 307.52%
Formula
Percentage change = [(921 - 226) / 226] x 100
Subtract the new number by the original number
921 - 226 = 695
695 ÷ 226 = 3.075221238938053
3.075221238938053 x 100 = 307.52%