-29.76% is the change from 551 to 387
Calculation steps:
[( 387 - 551 ) ÷ 551] x 100 = -29.76%
Formula
Percentage change = [(387 - 551) / 551] x 100
Subtract the new number by the original number
387 - 551 = -164
-164 ÷ 551 = -0.29764065335753176
-0.29764065335753176 x 100 = -29.76%