311.76% is the change from 51 to 210
Calculation steps:
[( 210 - 51 ) ÷ 51] x 100 = 311.76%
Formula
Percentage change = [(210 - 51) / 51] x 100
Subtract the new number by the original number
210 - 51 = 159
159 ÷ 51 = 3.1176470588235294
3.1176470588235294 x 100 = 311.76%