-52.66% is the change from 676 to 320
Calculation steps:
[( 320 - 676 ) ÷ 676] x 100 = -52.66%
Formula
Percentage change = [(320 - 676) / 676] x 100
Subtract the new number by the original number
320 - 676 = -356
-356 ÷ 676 = -0.5266272189349113
-0.5266272189349113 x 100 = -52.66%