-22.62% is the change from 650 to 503
Calculation steps:
[( 503 - 650 ) ÷ 650] x 100 = -22.62%
Formula
Percentage change = [(503 - 650) / 650] x 100
Subtract the new number by the original number
503 - 650 = -147
-147 ÷ 650 = -0.22615384615384615
-0.22615384615384615 x 100 = -22.62%