-40.28% is the change from 869 to 519
Calculation steps:
[( 519 - 869 ) ÷ 869] x 100 = -40.28%
Formula
Percentage change = [(519 - 869) / 869] x 100
Subtract the new number by the original number
519 - 869 = -350
-350 ÷ 869 = -0.40276179516685845
-0.40276179516685845 x 100 = -40.28%