-36.24% is the change from 803 to 512
Calculation steps:
[( 512 - 803 ) ÷ 803] x 100 = -36.24%
Formula
Percentage change = [(512 - 803) / 803] x 100
Subtract the new number by the original number
512 - 803 = -291
-291 ÷ 803 = -0.36239103362391034
-0.36239103362391034 x 100 = -36.24%