1)
400 - 100%
100 - D
D=100*100/400 = 10*10/4 = 100/4 = 25
D - 25%
2)
555 - 100%
111 - D
D=111*100/555 = 1*100/5 = 20
D - 20%
3)
130 - 100%
780 - D
D= 780*100/130 = 780*10/13 = 7800/13= 600
D - 600%
4)
321 - 100%
963 - D
D= 963*100/321 = 300
D - 300%
Ответ: 25;20;600;300 (%).