-72.78% is the change from 551 to 150
Calculation steps:
[( 150 - 551 ) ÷ 551] x 100 = -72.78%
Formula
Percentage change = [(150 - 551) / 551] x 100
Subtract the new number by the original number
150 - 551 = -401
-401 ÷ 551 = -0.7277676950998185
-0.7277676950998185 x 100 = -72.78%