1039.08% is the change from 87 to 991
Calculation steps:
[( 991 - 87 ) ÷ 87] x 100 = 1039.08%
Formula
Percentage change = [(991 - 87) / 87] x 100
Subtract the new number by the original number
991 - 87 = 904
904 ÷ 87 = 10.39080459770115
10.39080459770115 x 100 = 1039.08%