-81.69% is the change from 344 to 63
Calculation steps:
[( 63 - 344 ) ÷ 344] x 100 = -81.69%
Formula
Percentage change = [(63 - 344) / 344] x 100
Subtract the new number by the original number
63 - 344 = -281
-281 ÷ 344 = -0.8168604651162791
-0.8168604651162791 x 100 = -81.69%