1138.46% is the change from 13 to 161
Calculation steps:
[( 161 - 13 ) ÷ 13] x 100 = 1138.46%
Formula
Percentage change = [(161 - 13) / 13] x 100
Subtract the new number by the original number
161 - 13 = 148
148 ÷ 13 = 11.384615384615385
11.384615384615385 x 100 = 1138.46%