-68.83% is the change from 247 to 77
Calculation steps:
[( 77 - 247 ) ÷ 247] x 100 = -68.83%
Formula
Percentage change = [(77 - 247) / 247] x 100
Subtract the new number by the original number
77 - 247 = -170
-170 ÷ 247 = -0.6882591093117408
-0.6882591093117408 x 100 = -68.83%