-66.46% is the change from 161 to 54
Calculation steps:
[( 54 - 161 ) ÷ 161] x 100 = -66.46%
Formula
Percentage change = [(54 - 161) / 161] x 100
Subtract the new number by the original number
54 - 161 = -107
-107 ÷ 161 = -0.6645962732919255
-0.6645962732919255 x 100 = -66.46%