-54.25% is the change from 612 to 280
Calculation steps:
[( 280 - 612 ) ÷ 612] x 100 = -54.25%
Formula
Percentage change = [(280 - 612) / 612] x 100
Subtract the new number by the original number
280 - 612 = -332
-332 ÷ 612 = -0.5424836601307189
-0.5424836601307189 x 100 = -54.25%