-80.89% is the change from 649 to 124
Calculation steps:
[( 124 - 649 ) ÷ 649] x 100 = -80.89%
Formula
Percentage change = [(124 - 649) / 649] x 100
Subtract the new number by the original number
124 - 649 = -525
-525 ÷ 649 = -0.8089368258859785
-0.8089368258859785 x 100 = -80.89%