-3.88% is the change from 541 to 520
Calculation steps:
[( 520 - 541 ) ÷ 541] x 100 = -3.88%
Formula
Percentage change = [(520 - 541) / 541] x 100
Subtract the new number by the original number
520 - 541 = -21
-21 ÷ 541 = -0.038817005545286505
-0.038817005545286505 x 100 = -3.88%