-22.06% is the change from 680 to 530
Calculation steps:
[( 530 - 680 ) ÷ 680] x 100 = -22.06%
Formula
Percentage change = [(530 - 680) / 680] x 100
Subtract the new number by the original number
530 - 680 = -150
-150 ÷ 680 = -0.22058823529411764
-0.22058823529411764 x 100 = -22.06%