312.73% is the change from 220 to 908
Calculation steps:
[( 908 - 220 ) ÷ 220] x 100 = 312.73%
Formula
Percentage change = [(908 - 220) / 220] x 100
Subtract the new number by the original number
908 - 220 = 688
688 ÷ 220 = 3.1272727272727274
3.1272727272727274 x 100 = 312.73%