315.69% is the change from 51 to 212
Calculation steps:
[( 212 - 51 ) ÷ 51] x 100 = 315.69%
Formula
Percentage change = [(212 - 51) / 51] x 100
Subtract the new number by the original number
212 - 51 = 161
161 ÷ 51 = 3.156862745098039
3.156862745098039 x 100 = 315.69%