-88.2% is the change from 161 to 19
Calculation steps:
[( 19 - 161 ) ÷ 161] x 100 = -88.2%
Formula
Percentage change = [(19 - 161) / 161] x 100
Subtract the new number by the original number
19 - 161 = -142
-142 ÷ 161 = -0.8819875776397516
-0.8819875776397516 x 100 = -88.2%