-70.64% is the change from 579 to 170
Calculation steps:
[( 170 - 579 ) ÷ 579] x 100 = -70.64%
Formula
Percentage change = [(170 - 579) / 579] x 100
Subtract the new number by the original number
170 - 579 = -409
-409 ÷ 579 = -0.7063903281519862
-0.7063903281519862 x 100 = -70.64%