-71.78% is the change from 606 to 171
Calculation steps:
[( 171 - 606 ) ÷ 606] x 100 = -71.78%
Formula
Percentage change = [(171 - 606) / 606] x 100
Subtract the new number by the original number
171 - 606 = -435
-435 ÷ 606 = -0.7178217821782178
-0.7178217821782178 x 100 = -71.78%