-15.06% is the change from 611 to 519
Calculation steps:
[( 519 - 611 ) ÷ 611] x 100 = -15.06%
Formula
Percentage change = [(519 - 611) / 611] x 100
Subtract the new number by the original number
519 - 611 = -92
-92 ÷ 611 = -0.15057283142389524
-0.15057283142389524 x 100 = -15.06%