-25.64% is the change from 819 to 609
Calculation steps:
[( 609 - 819 ) ÷ 819] x 100 = -25.64%
Formula
Percentage change = [(609 - 819) / 819] x 100
Subtract the new number by the original number
609 - 819 = -210
-210 ÷ 819 = -0.2564102564102564
-0.2564102564102564 x 100 = -25.64%