82.57% is the change from 109 to 199
Calculation steps:
[( 199 - 109 ) ÷ 109] x 100 = 82.57%
Formula
Percentage change = [(199 - 109) / 109] x 100
Subtract the new number by the original number
199 - 109 = 90
90 ÷ 109 = 0.8256880733944955
0.8256880733944955 x 100 = 82.57%