-77.86% is the change from 551 to 122
Calculation steps:
[( 122 - 551 ) ÷ 551] x 100 = -77.86%
Formula
Percentage change = [(122 - 551) / 551] x 100
Subtract the new number by the original number
122 - 551 = -429
-429 ÷ 551 = -0.778584392014519
-0.778584392014519 x 100 = -77.86%