-70.38% is the change from 503 to 149
Calculation steps:
[( 149 - 503 ) ÷ 503] x 100 = -70.38%
Formula
Percentage change = [(149 - 503) / 503] x 100
Subtract the new number by the original number
149 - 503 = -354
-354 ÷ 503 = -0.7037773359840954
-0.7037773359840954 x 100 = -70.38%