99.59% is the change from 488 to 974
Calculation steps:
[( 974 - 488 ) ÷ 488] x 100 = 99.59%
Formula
Percentage change = [(974 - 488) / 488] x 100
Subtract the new number by the original number
974 - 488 = 486
486 ÷ 488 = 0.9959016393442623
0.9959016393442623 x 100 = 99.59%