-46.75% is the change from 400 to 213
Calculation steps:
[( 213 - 400 ) ÷ 400] x 100 = -46.75%
Formula
Percentage change = [(213 - 400) / 400] x 100
Subtract the new number by the original number
213 - 400 = -187
-187 ÷ 400 = -0.4675
-0.4675 x 100 = -46.75%