-46.6% is the change from 191 to 102
Calculation steps:
[( 102 - 191 ) ÷ 191] x 100 = -46.6%
Formula
Percentage change = [(102 - 191) / 191] x 100
Subtract the new number by the original number
102 - 191 = -89
-89 ÷ 191 = -0.46596858638743455
-0.46596858638743455 x 100 = -46.6%