350% is the change from 210 to 945
Calculation steps:
[( 945 - 210 ) ÷ 210] x 100 = 350%
Formula
Percentage change = [(945 - 210) / 210] x 100
Subtract the new number by the original number
945 - 210 = 735
735 ÷ 210 = 3.5
3.5 x 100 = 350%
Example