-34.43% is the change from 610 to 400
Calculation steps:
[( 400 - 610 ) ÷ 610] x 100 = -34.43%
Formula
Percentage change = [(400 - 610) / 610] x 100
Subtract the new number by the original number
400 - 610 = -210
-210 ÷ 610 = -0.3442622950819672
-0.3442622950819672 x 100 = -34.43%