81.56% is the change from 537 to 975
Calculation steps:
[( 975 - 537 ) ÷ 537] x 100 = 81.56%
Formula
Percentage change = [(975 - 537) / 537] x 100
Subtract the new number by the original number
975 - 537 = 438
438 ÷ 537 = 0.8156424581005587
0.8156424581005587 x 100 = 81.56%