-63.68% is the change from 771 to 280
Calculation steps:
[( 280 - 771 ) ÷ 771] x 100 = -63.68%
Formula
Percentage change = [(280 - 771) / 771] x 100
Subtract the new number by the original number
280 - 771 = -491
-491 ÷ 771 = -0.6368352788586251
-0.6368352788586251 x 100 = -63.68%