295.45% is the change from 220 to 870
Calculation steps:
[( 870 - 220 ) ÷ 220] x 100 = 295.45%
Formula
Percentage change = [(870 - 220) / 220] x 100
Subtract the new number by the original number
870 - 220 = 650
650 ÷ 220 = 2.9545454545454546
2.9545454545454546 x 100 = 295.45%