342.73% is the change from 220 to 974
Calculation steps:
[( 974 - 220 ) ÷ 220] x 100 = 342.73%
Formula
Percentage change = [(974 - 220) / 220] x 100
Subtract the new number by the original number
974 - 220 = 754
754 ÷ 220 = 3.4272727272727272
3.4272727272727272 x 100 = 342.73%