100.99% is the change from 101 to 203
Calculation steps:
[( 203 - 101 ) ÷ 101] x 100 = 100.99%
Formula
Percentage change = [(203 - 101) / 101] x 100
Subtract the new number by the original number
203 - 101 = 102
102 ÷ 101 = 1.00990099009901
1.00990099009901 x 100 = 100.99%