991.11% is the change from 45 to 491
Calculation steps:
[( 491 - 45 ) ÷ 45] x 100 = 991.11%
Formula
Percentage change = [(491 - 45) / 45] x 100
Subtract the new number by the original number
491 - 45 = 446
446 ÷ 45 = 9.911111111111111
9.911111111111111 x 100 = 991.11%