52.91% is the change from 635 to 971
Calculation steps:
[( 971 - 635 ) ÷ 635] x 100 = 52.91%
Formula
Percentage change = [(971 - 635) / 635] x 100
Subtract the new number by the original number
971 - 635 = 336
336 ÷ 635 = 0.5291338582677165
0.5291338582677165 x 100 = 52.91%