-30.85% is the change from 551 to 381
Calculation steps:
[( 381 - 551 ) ÷ 551] x 100 = -30.85%
Formula
Percentage change = [(381 - 551) / 551] x 100
Subtract the new number by the original number
381 - 551 = -170
-170 ÷ 551 = -0.308529945553539
-0.308529945553539 x 100 = -30.85%