-35.59% is the change from 503 to 324
Calculation steps:
[( 324 - 503 ) ÷ 503] x 100 = -35.59%
Formula
Percentage change = [(324 - 503) / 503] x 100
Subtract the new number by the original number
324 - 503 = -179
-179 ÷ 503 = -0.3558648111332008
-0.3558648111332008 x 100 = -35.59%