-86.98% is the change from 768 to 100
Calculation steps:
[( 100 - 768 ) ÷ 768] x 100 = -86.98%
Formula
Percentage change = [(100 - 768) / 768] x 100
Subtract the new number by the original number
100 - 768 = -668
-668 ÷ 768 = -0.8697916666666666
-0.8697916666666666 x 100 = -86.98%