-30.3% is the change from 779 to 543
Calculation steps:
[( 543 - 779 ) ÷ 779] x 100 = -30.3%
Formula
Percentage change = [(543 - 779) / 779] x 100
Subtract the new number by the original number
543 - 779 = -236
-236 ÷ 779 = -0.3029525032092426
-0.3029525032092426 x 100 = -30.3%