-65.18% is the change from 919 to 320
Calculation steps:
[( 320 - 919 ) ÷ 919] x 100 = -65.18%
Formula
Percentage change = [(320 - 919) / 919] x 100
Subtract the new number by the original number
320 - 919 = -599
-599 ÷ 919 = -0.6517954298150164
-0.6517954298150164 x 100 = -65.18%