-68.21% is the change from 497 to 158
Calculation steps:
[( 158 - 497 ) ÷ 497] x 100 = -68.21%
Formula
Percentage change = [(158 - 497) / 497] x 100
Subtract the new number by the original number
158 - 497 = -339
-339 ÷ 497 = -0.682092555331992
-0.682092555331992 x 100 = -68.21%