-41.21% is the change from 546 to 321
Calculation steps:
[( 321 - 546 ) ÷ 546] x 100 = -41.21%
Formula
Percentage change = [(321 - 546) / 546] x 100
Subtract the new number by the original number
321 - 546 = -225
-225 ÷ 546 = -0.41208791208791207
-0.41208791208791207 x 100 = -41.21%