-64.83% is the change from 344 to 121
Calculation steps:
[( 121 - 344 ) ÷ 344] x 100 = -64.83%
Formula
Percentage change = [(121 - 344) / 344] x 100
Subtract the new number by the original number
121 - 344 = -223
-223 ÷ 344 = -0.6482558139534884
-0.6482558139534884 x 100 = -64.83%