78.75%
It is: 210--630 = 840
388
630
567
It is 630/90 = 7 and 7 minus 2 = 5
800 minus 15 percent = 680
x - 15% = 630 so 85% of x = 630 x*85/100 = 630 x = 630*100/85 = 741.1765 approx.
800 - (20%) = 640
minus 800 g or -800g
800 minus 160 is 640.
8,584 minus 800 is 7,784.