-74.15% is the change from 646 to 167
Calculation steps:
[( 167 - 646 ) ÷ 646] x 100 = -74.15%
Formula
Percentage change = [(167 - 646) / 646] x 100
Subtract the new number by the original number
167 - 646 = -479
-479 ÷ 646 = -0.7414860681114551
-0.7414860681114551 x 100 = -74.15%