-42.83% is the change from 551 to 315
Calculation steps:
[( 315 - 551 ) ÷ 551] x 100 = -42.83%
Formula
Percentage change = [(315 - 551) / 551] x 100
Subtract the new number by the original number
315 - 551 = -236
-236 ÷ 551 = -0.4283121597096189
-0.4283121597096189 x 100 = -42.83%