-83.98% is the change from 768 to 123
Calculation steps:
[( 123 - 768 ) ÷ 768] x 100 = -83.98%
Formula
Percentage change = [(123 - 768) / 768] x 100
Subtract the new number by the original number
123 - 768 = -645
-645 ÷ 768 = -0.83984375
-0.83984375 x 100 = -83.98%