52.43% is the change from 637 to 971
Calculation steps:
[( 971 - 637 ) ÷ 637] x 100 = 52.43%
Formula
Percentage change = [(971 - 637) / 637] x 100
Subtract the new number by the original number
971 - 637 = 334
334 ÷ 637 = 0.5243328100470958
0.5243328100470958 x 100 = 52.43%