-33% is the change from 503 to 337
Calculation steps:
[( 337 - 503 ) ÷ 503] x 100 = -33%
Formula
Percentage change = [(337 - 503) / 503] x 100
Subtract the new number by the original number
337 - 503 = -166
-166 ÷ 503 = -0.33001988071570576
-0.33001988071570576 x 100 = -33%