-68.59% is the change from 503 to 158
Calculation steps:
[( 158 - 503 ) ÷ 503] x 100 = -68.59%
Formula
Percentage change = [(158 - 503) / 503] x 100
Subtract the new number by the original number
158 - 503 = -345
-345 ÷ 503 = -0.6858846918489065
-0.6858846918489065 x 100 = -68.59%