-17.28% is the change from 191 to 158
Calculation steps:
[( 158 - 191 ) ÷ 191] x 100 = -17.28%
Formula
Percentage change = [(158 - 191) / 191] x 100
Subtract the new number by the original number
158 - 191 = -33
-33 ÷ 191 = -0.17277486910994763
-0.17277486910994763 x 100 = -17.28%