-60.75% is the change from 321 to 126
Calculation steps:
[( 126 - 321 ) ÷ 321] x 100 = -60.75%
Formula
Percentage change = [(126 - 321) / 321] x 100
Subtract the new number by the original number
126 - 321 = -195
-195 ÷ 321 = -0.6074766355140186
-0.6074766355140186 x 100 = -60.75%