370.59% is the change from 51 to 240
Calculation steps:
[( 240 - 51 ) ÷ 51] x 100 = 370.59%
Formula
Percentage change = [(240 - 51) / 51] x 100
Subtract the new number by the original number
240 - 51 = 189
189 ÷ 51 = 3.7058823529411766
3.7058823529411766 x 100 = 370.59%