-74.63% is the change from 611 to 155
Calculation steps:
[( 155 - 611 ) ÷ 611] x 100 = -74.63%
Formula
Percentage change = [(155 - 611) / 611] x 100
Subtract the new number by the original number
155 - 611 = -456
-456 ÷ 611 = -0.7463175122749591
-0.7463175122749591 x 100 = -74.63%