-57.55% is the change from 669 to 284
Calculation steps:
[( 284 - 669 ) ÷ 669] x 100 = -57.55%
Formula
Percentage change = [(284 - 669) / 669] x 100
Subtract the new number by the original number
284 - 669 = -385
-385 ÷ 669 = -0.5754857997010463
-0.5754857997010463 x 100 = -57.55%