99.79% is the change from 487 to 973
Calculation steps:
[( 973 - 487 ) ÷ 487] x 100 = 99.79%
Formula
Percentage change = [(973 - 487) / 487] x 100
Subtract the new number by the original number
973 - 487 = 486
486 ÷ 487 = 0.997946611909651
0.997946611909651 x 100 = 99.79%