-90.44% is the change from 680 to 65
Calculation steps:
[( 65 - 680 ) ÷ 680] x 100 = -90.44%
Formula
Percentage change = [(65 - 680) / 680] x 100
Subtract the new number by the original number
65 - 680 = -615
-615 ÷ 680 = -0.9044117647058824
-0.9044117647058824 x 100 = -90.44%