-13.24% is the change from 612 to 531
Calculation steps:
[( 531 - 612 ) ÷ 612] x 100 = -13.24%
Formula
Percentage change = [(531 - 612) / 612] x 100
Subtract the new number by the original number
531 - 612 = -81
-81 ÷ 612 = -0.1323529411764706
-0.1323529411764706 x 100 = -13.24%