-80.57% is the change from 803 to 156
Calculation steps:
[( 156 - 803 ) ÷ 803] x 100 = -80.57%
Formula
Percentage change = [(156 - 803) / 803] x 100
Subtract the new number by the original number
156 - 803 = -647
-647 ÷ 803 = -0.8057285180572852
-0.8057285180572852 x 100 = -80.57%