-1.82% is the change from 824 to 809
Calculation steps:
[( 809 - 824 ) ÷ 824] x 100 = -1.82%
Formula
Percentage change = [(809 - 824) / 824] x 100
Subtract the new number by the original number
809 - 824 = -15
-15 ÷ 824 = -0.01820388349514563
-0.01820388349514563 x 100 = -1.82%