-22.47% is the change from 543 to 421
Calculation steps:
[( 421 - 543 ) ÷ 543] x 100 = -22.47%
Formula
Percentage change = [(421 - 543) / 543] x 100
Subtract the new number by the original number
421 - 543 = -122
-122 ÷ 543 = -0.22467771639042358
-0.22467771639042358 x 100 = -22.47%