260% is the change from 70 to 252
Calculation steps:
[( 252 - 70 ) ÷ 70] x 100 = 260%
Formula
Percentage change = [(252 - 70) / 70] x 100
Subtract the new number by the original number
252 - 70 = 182
182 ÷ 70 = 2.6
2.6 x 100 = 260%
Example