-30.77% is the change from 611 to 423
Calculation steps:
[( 423 - 611 ) ÷ 611] x 100 = -30.77%
Formula
Percentage change = [(423 - 611) / 611] x 100
Subtract the new number by the original number
423 - 611 = -188
-188 ÷ 611 = -0.3076923076923077
-0.3076923076923077 x 100 = -30.77%