-67.29% is the change from 321 to 105
Calculation steps:
[( 105 - 321 ) ÷ 321] x 100 = -67.29%
Formula
Percentage change = [(105 - 321) / 321] x 100
Subtract the new number by the original number
105 - 321 = -216
-216 ÷ 321 = -0.6728971962616822
-0.6728971962616822 x 100 = -67.29%