342.86% is the change from 210 to 930
Calculation steps:
[( 930 - 210 ) ÷ 210] x 100 = 342.86%
Formula
Percentage change = [(930 - 210) / 210] x 100
Subtract the new number by the original number
930 - 210 = 720
720 ÷ 210 = 3.4285714285714284
3.4285714285714284 x 100 = 342.86%