98.98% is the change from 491 to 977
Calculation steps:
[( 977 - 491 ) ÷ 491] x 100 = 98.98%
Formula
Percentage change = [(977 - 491) / 491] x 100
Subtract the new number by the original number
977 - 491 = 486
486 ÷ 491 = 0.9898167006109979
0.9898167006109979 x 100 = 98.98%