-68.94% is the change from 499 to 155
Calculation steps:
[( 155 - 499 ) ÷ 499] x 100 = -68.94%
Formula
Percentage change = [(155 - 499) / 499] x 100
Subtract the new number by the original number
155 - 499 = -344
-344 ÷ 499 = -0.6893787575150301
-0.6893787575150301 x 100 = -68.94%