-79.82% is the change from 768 to 155
Calculation steps:
[( 155 - 768 ) ÷ 768] x 100 = -79.82%
Formula
Percentage change = [(155 - 768) / 768] x 100
Subtract the new number by the original number
155 - 768 = -613
-613 ÷ 768 = -0.7981770833333334
-0.7981770833333334 x 100 = -79.82%