-4.05% is the change from 543 to 521
Calculation steps:
[( 521 - 543 ) ÷ 543] x 100 = -4.05%
Formula
Percentage change = [(521 - 543) / 543] x 100
Subtract the new number by the original number
521 - 543 = -22
-22 ÷ 543 = -0.040515653775322284
-0.040515653775322284 x 100 = -4.05%