-41.5% is the change from 771 to 451
Calculation steps:
[( 451 - 771 ) ÷ 771] x 100 = -41.5%
Formula
Percentage change = [(451 - 771) / 771] x 100
Subtract the new number by the original number
451 - 771 = -320
-320 ÷ 771 = -0.4150453955901427
-0.4150453955901427 x 100 = -41.5%