51.06% is the change from 517 to 781
Calculation steps:
[( 781 - 517 ) ÷ 517] x 100 = 51.06%
Formula
Percentage change = [(781 - 517) / 517] x 100
Subtract the new number by the original number
781 - 517 = 264
264 ÷ 517 = 0.5106382978723404
0.5106382978723404 x 100 = 51.06%