11.11% is the change from 45 to 50
Calculation steps:
[( 50 - 45 ) ÷ 45] x 100 = 11.11%
Formula
Percentage change = [(50 - 45) / 45] x 100
Subtract the new number by the original number
50 - 45 = 5
5 ÷ 45 = 0.1111111111111111
0.1111111111111111 x 100 = 11.11%