-67.82% is the change from 491 to 158
Calculation steps:
[( 158 - 491 ) ÷ 491] x 100 = -67.82%
Formula
Percentage change = [(158 - 491) / 491] x 100
Subtract the new number by the original number
158 - 491 = -333
-333 ÷ 491 = -0.6782077393075356
-0.6782077393075356 x 100 = -67.82%