90.2% is the change from 51 to 97
Calculation steps:
[( 97 - 51 ) ÷ 51] x 100 = 90.2%
Formula
Percentage change = [(97 - 51) / 51] x 100
Subtract the new number by the original number
97 - 51 = 46
46 ÷ 51 = 0.9019607843137255
0.9019607843137255 x 100 = 90.2%