70% is the change from 210 to 357
Calculation steps:
[( 357 - 210 ) ÷ 210] x 100 = 70%
Formula
Percentage change = [(357 - 210) / 210] x 100
Subtract the new number by the original number
357 - 210 = 147
147 ÷ 210 = 0.7
0.7 x 100 = 70%
Example