220% is the change from 70 to 224
Calculation steps:
[( 224 - 70 ) ÷ 70] x 100 = 220%
Formula
Percentage change = [(224 - 70) / 70] x 100
Subtract the new number by the original number
224 - 70 = 154
154 ÷ 70 = 2.2
2.2 x 100 = 220%
Example