-97.62% is the change from 168 to 4
Calculation steps:
[( 4 - 168 ) ÷ 168] x 100 = -97.62%
Formula
Percentage change = [(4 - 168) / 168] x 100
Subtract the new number by the original number
4 - 168 = -164
-164 ÷ 168 = -0.9761904761904762
-0.9761904761904762 x 100 = -97.62%