-9.83% is the change from 356 to 321
Calculation steps:
[( 321 - 356 ) ÷ 356] x 100 = -9.83%
Formula
Percentage change = [(321 - 356) / 356] x 100
Subtract the new number by the original number
321 - 356 = -35
-35 ÷ 356 = -0.09831460674157304
-0.09831460674157304 x 100 = -9.83%