-76.59% is the change from 346 to 81
Calculation steps:
[( 81 - 346 ) ÷ 346] x 100 = -76.59%
Formula
Percentage change = [(81 - 346) / 346] x 100
Subtract the new number by the original number
81 - 346 = -265
-265 ÷ 346 = -0.7658959537572254
-0.7658959537572254 x 100 = -76.59%