52.94% is the change from 51 to 78
Calculation steps:
[( 78 - 51 ) ÷ 51] x 100 = 52.94%
Formula
Percentage change = [(78 - 51) / 51] x 100
Subtract the new number by the original number
78 - 51 = 27
27 ÷ 51 = 0.5294117647058824
0.5294117647058824 x 100 = 52.94%