-7.8% is the change from 551 to 508
Calculation steps:
[( 508 - 551 ) ÷ 551] x 100 = -7.8%
Formula
Percentage change = [(508 - 551) / 551] x 100
Subtract the new number by the original number
508 - 551 = -43
-43 ÷ 551 = -0.0780399274047187
-0.0780399274047187 x 100 = -7.8%