-29.36% is the change from 780 to 551
Calculation steps:
[( 551 - 780 ) ÷ 780] x 100 = -29.36%
Formula
Percentage change = [(551 - 780) / 780] x 100
Subtract the new number by the original number
551 - 780 = -229
-229 ÷ 780 = -0.2935897435897436
-0.2935897435897436 x 100 = -29.36%