103.49% is the change from 487 to 991
Calculation steps:
[( 991 - 487 ) ÷ 487] x 100 = 103.49%
Formula
Percentage change = [(991 - 487) / 487] x 100
Subtract the new number by the original number
991 - 487 = 504
504 ÷ 487 = 1.0349075975359343
1.0349075975359343 x 100 = 103.49%