-28.53% is the change from 771 to 551
Calculation steps:
[( 551 - 771 ) ÷ 771] x 100 = -28.53%
Formula
Percentage change = [(551 - 771) / 771] x 100
Subtract the new number by the original number
551 - 771 = -220
-220 ÷ 771 = -0.2853437094682231
-0.2853437094682231 x 100 = -28.53%