49.54% is the change from 646 to 966
Calculation steps:
[( 966 - 646 ) ÷ 646] x 100 = 49.54%
Formula
Percentage change = [(966 - 646) / 646] x 100
Subtract the new number by the original number
966 - 646 = 320
320 ÷ 646 = 0.4953560371517028
0.4953560371517028 x 100 = 49.54%