-36.49% is the change from 803 to 510
Calculation steps:
[( 510 - 803 ) ÷ 803] x 100 = -36.49%
Formula
Percentage change = [(510 - 803) / 803] x 100
Subtract the new number by the original number
510 - 803 = -293
-293 ÷ 803 = -0.36488169364881695
-0.36488169364881695 x 100 = -36.49%