79.09% is the change from 220 to 394
Calculation steps:
[( 394 - 220 ) ÷ 220] x 100 = 79.09%
Formula
Percentage change = [(394 - 220) / 220] x 100
Subtract the new number by the original number
394 - 220 = 174
174 ÷ 220 = 0.7909090909090909
0.7909090909090909 x 100 = 79.09%