1501.96% is the change from 51 to 817
Calculation steps:
[( 817 - 51 ) ÷ 51] x 100 = 1501.96%
Formula
Percentage change = [(817 - 51) / 51] x 100
Subtract the new number by the original number
817 - 51 = 766
766 ÷ 51 = 15.019607843137255
15.019607843137255 x 100 = 1501.96%