-27.73% is the change from 541 to 391
Calculation steps:
[( 391 - 541 ) ÷ 541] x 100 = -27.73%
Formula
Percentage change = [(391 - 541) / 541] x 100
Subtract the new number by the original number
391 - 541 = -150
-150 ÷ 541 = -0.27726432532347506
-0.27726432532347506 x 100 = -27.73%