-61.37% is the change from 321 to 124
Calculation steps:
[( 124 - 321 ) ÷ 321] x 100 = -61.37%
Formula
Percentage change = [(124 - 321) / 321] x 100
Subtract the new number by the original number
124 - 321 = -197
-197 ÷ 321 = -0.6137071651090342
-0.6137071651090342 x 100 = -61.37%