-77.86% is the change from 768 to 170
Calculation steps:
[( 170 - 768 ) ÷ 768] x 100 = -77.86%
Formula
Percentage change = [(170 - 768) / 768] x 100
Subtract the new number by the original number
170 - 768 = -598
-598 ÷ 768 = -0.7786458333333334
-0.7786458333333334 x 100 = -77.86%