-77.92% is the change from 77 to 17
Calculation steps:
[( 17 - 77 ) ÷ 77] x 100 = -77.92%
Formula
Percentage change = [(17 - 77) / 77] x 100
Subtract the new number by the original number
17 - 77 = -60
-60 ÷ 77 = -0.7792207792207793
-0.7792207792207793 x 100 = -77.92%