-6.24% is the change from 481 to 451
Calculation steps:
[( 451 - 481 ) ÷ 481] x 100 = -6.24%
Formula
Percentage change = [(451 - 481) / 481] x 100
Subtract the new number by the original number
451 - 481 = -30
-30 ÷ 481 = -0.062370062370062374
-0.062370062370062374 x 100 = -6.24%
Example