-96.49% is the change from 656 to 23
Calculation steps:
[( 23 - 656 ) ÷ 656] x 100 = -96.49%
Formula
Percentage change = [(23 - 656) / 656] x 100
Subtract the new number by the original number
23 - 656 = -633
-633 ÷ 656 = -0.9649390243902439
-0.9649390243902439 x 100 = -96.49%