-56.88% is the change from 821 to 354
Calculation steps:
[( 354 - 821 ) ÷ 821] x 100 = -56.88%
Formula
Percentage change = [(354 - 821) / 821] x 100
Subtract the new number by the original number
354 - 821 = -467
-467 ÷ 821 = -0.5688185140073082
-0.5688185140073082 x 100 = -56.88%