-54.9% is the change from 612 to 276
Calculation steps:
[( 276 - 612 ) ÷ 612] x 100 = -54.9%
Formula
Percentage change = [(276 - 612) / 612] x 100
Subtract the new number by the original number
276 - 612 = -336
-336 ÷ 612 = -0.5490196078431373
-0.5490196078431373 x 100 = -54.9%