-28.8% is the change from 191 to 136
Calculation steps:
[( 136 - 191 ) ÷ 191] x 100 = -28.8%
Formula
Percentage change = [(136 - 191) / 191] x 100
Subtract the new number by the original number
136 - 191 = -55
-55 ÷ 191 = -0.2879581151832461
-0.2879581151832461 x 100 = -28.8%