99.39% is the change from 488 to 973
Calculation steps:
[( 973 - 488 ) ÷ 488] x 100 = 99.39%
Formula
Percentage change = [(973 - 488) / 488] x 100
Subtract the new number by the original number
973 - 488 = 485
485 ÷ 488 = 0.9938524590163934
0.9938524590163934 x 100 = 99.39%