-15.11% is the change from 503 to 427
Calculation steps:
[( 427 - 503 ) ÷ 503] x 100 = -15.11%
Formula
Percentage change = [(427 - 503) / 503] x 100
Subtract the new number by the original number
427 - 503 = -76
-76 ÷ 503 = -0.15109343936381708
-0.15109343936381708 x 100 = -15.11%