-83.99% is the change from 656 to 105
Calculation steps:
[( 105 - 656 ) ÷ 656] x 100 = -83.99%
Formula
Percentage change = [(105 - 656) / 656] x 100
Subtract the new number by the original number
105 - 656 = -551
-551 ÷ 656 = -0.8399390243902439
-0.8399390243902439 x 100 = -83.99%