20.71% is the change from 647 to 781
Calculation steps:
[( 781 - 647 ) ÷ 647] x 100 = 20.71%
Formula
Percentage change = [(781 - 647) / 647] x 100
Subtract the new number by the original number
781 - 647 = 134
134 ÷ 647 = 0.2071097372488408
0.2071097372488408 x 100 = 20.71%