-76.22% is the change from 349 to 83
Calculation steps:
[( 83 - 349 ) ÷ 349] x 100 = -76.22%
Formula
Percentage change = [(83 - 349) / 349] x 100
Subtract the new number by the original number
83 - 349 = -266
-266 ÷ 349 = -0.7621776504297995
-0.7621776504297995 x 100 = -76.22%