-7.96% is the change from 490 to 451
Calculation steps:
[( 451 - 490 ) ÷ 490] x 100 = -7.96%
Formula
Percentage change = [(451 - 490) / 490] x 100
Subtract the new number by the original number
451 - 490 = -39
-39 ÷ 490 = -0.07959183673469387
-0.07959183673469387 x 100 = -7.96%