32.46% is the change from 647 to 857
Calculation steps:
[( 857 - 647 ) ÷ 647] x 100 = 32.46%
Formula
Percentage change = [(857 - 647) / 647] x 100
Subtract the new number by the original number
857 - 647 = 210
210 ÷ 647 = 0.32457496136012365
0.32457496136012365 x 100 = 32.46%