-90.51% is the change from 685 to 65
Calculation steps:
[( 65 - 685 ) ÷ 685] x 100 = -90.51%
Formula
Percentage change = [(65 - 685) / 685] x 100
Subtract the new number by the original number
65 - 685 = -620
-620 ÷ 685 = -0.9051094890510949
-0.9051094890510949 x 100 = -90.51%