50.93% is the change from 646 to 975
Calculation steps:
[( 975 - 646 ) ÷ 646] x 100 = 50.93%
Formula
Percentage change = [(975 - 646) / 646] x 100
Subtract the new number by the original number
975 - 646 = 329
329 ÷ 646 = 0.5092879256965944
0.5092879256965944 x 100 = 50.93%