-45.05% is the change from 777 to 427
Calculation steps:
[( 427 - 777 ) ÷ 777] x 100 = -45.05%
Formula
Percentage change = [(427 - 777) / 777] x 100
Subtract the new number by the original number
427 - 777 = -350
-350 ÷ 777 = -0.45045045045045046
-0.45045045045045046 x 100 = -45.05%