303.92% is the change from 51 to 206
Calculation steps:
[( 206 - 51 ) ÷ 51] x 100 = 303.92%
Formula
Percentage change = [(206 - 51) / 51] x 100
Subtract the new number by the original number
206 - 51 = 155
155 ÷ 51 = 3.0392156862745097
3.0392156862745097 x 100 = 303.92%