89.11% is the change from 101 to 191
Calculation steps:
[( 191 - 101 ) ÷ 101] x 100 = 89.11%
Formula
Percentage change = [(191 - 101) / 101] x 100
Subtract the new number by the original number
191 - 101 = 90
90 ÷ 101 = 0.8910891089108911
0.8910891089108911 x 100 = 89.11%