-73.1% is the change from 606 to 163
Calculation steps:
[( 163 - 606 ) ÷ 606] x 100 = -73.1%
Formula
Percentage change = [(163 - 606) / 606] x 100
Subtract the new number by the original number
163 - 606 = -443
-443 ÷ 606 = -0.731023102310231
-0.731023102310231 x 100 = -73.1%