-64.89% is the change from 809 to 284
Calculation steps:
[( 284 - 809 ) ÷ 809] x 100 = -64.89%
Formula
Percentage change = [(284 - 809) / 809] x 100
Subtract the new number by the original number
284 - 809 = -525
-525 ÷ 809 = -0.6489493201483313
-0.6489493201483313 x 100 = -64.89%