To convert any decimal to percent you just multiply by 100. In this case, 1.136 × 100 = 113.6%
845-1136 = -291
1136
The number 284 is divisible by the multiples of 284 (which are infinite), including these: 284, 568, 852, 1136, 1420, 1704, 1988, 2272, 2556 . . .
The average of 82 percent, 94 percent, 89 percent, and 91 percent is 89 percent.
(85 percent + 79 percent + 92 percent + 100 percent)/4 = 89 percent