-56.46% is the change from 921 to 401
Calculation steps:
[( 401 - 921 ) ÷ 921] x 100 = -56.46%
Formula
Percentage change = [(401 - 921) / 921] x 100
Subtract the new number by the original number
401 - 921 = -520
-520 ÷ 921 = -0.5646036916395223
-0.5646036916395223 x 100 = -56.46%