-15.2% is the change from 612 to 519
Calculation steps:
[( 519 - 612 ) ÷ 612] x 100 = -15.2%
Formula
Percentage change = [(519 - 612) / 612] x 100
Subtract the new number by the original number
519 - 612 = -93
-93 ÷ 612 = -0.15196078431372548
-0.15196078431372548 x 100 = -15.2%