-78.49% is the change from 609 to 131
Calculation steps:
[( 131 - 609 ) ÷ 609] x 100 = -78.49%
Formula
Percentage change = [(131 - 609) / 609] x 100
Subtract the new number by the original number
131 - 609 = -478
-478 ÷ 609 = -0.7848932676518884
-0.7848932676518884 x 100 = -78.49%