-74.85% is the change from 171 to 43
Calculation steps:
[( 43 - 171 ) ÷ 171] x 100 = -74.85%
Formula
Percentage change = [(43 - 171) / 171] x 100
Subtract the new number by the original number
43 - 171 = -128
-128 ÷ 171 = -0.7485380116959064
-0.7485380116959064 x 100 = -74.85%