-2.77% is the change from 433 to 421
Calculation steps:
[( 421 - 433 ) ÷ 433] x 100 = -2.77%
Formula
Percentage change = [(421 - 433) / 433] x 100
Subtract the new number by the original number
421 - 433 = -12
-12 ÷ 433 = -0.02771362586605081
-0.02771362586605081 x 100 = -2.77%