91.52% is the change from 507 to 971
Calculation steps:
[( 971 - 507 ) ÷ 507] x 100 = 91.52%
Formula
Percentage change = [(971 - 507) / 507] x 100
Subtract the new number by the original number
971 - 507 = 464
464 ÷ 507 = 0.9151873767258383
0.9151873767258383 x 100 = 91.52%