-63.64% is the change from 77 to 28
Calculation steps:
[( 28 - 77 ) ÷ 77] x 100 = -63.64%
Formula
Percentage change = [(28 - 77) / 77] x 100
Subtract the new number by the original number
28 - 77 = -49
-49 ÷ 77 = -0.6363636363636364
-0.6363636363636364 x 100 = -63.64%