-98.31% is the change from 768 to 13
Calculation steps:
[( 13 - 768 ) ÷ 768] x 100 = -98.31%
Formula
Percentage change = [(13 - 768) / 768] x 100
Subtract the new number by the original number
13 - 768 = -755
-755 ÷ 768 = -0.9830729166666666
-0.9830729166666666 x 100 = -98.31%