-81.79% is the change from 346 to 63
Calculation steps:
[( 63 - 346 ) ÷ 346] x 100 = -81.79%
Formula
Percentage change = [(63 - 346) / 346] x 100
Subtract the new number by the original number
63 - 346 = -283
-283 ÷ 346 = -0.8179190751445087
-0.8179190751445087 x 100 = -81.79%