63.6364% increase.
95 increased by 90 percent = 180.5
90 increased by 80 percent of itself is 162.
90 increased by 27% = 114.3
24% of 90= 24% * 90= 0.24 * 90= 21.6
90 + 10% = 99
90*0.24=21.6
1330
91.8
Work out 90% of 90 = 8190 + 81 = 171
190 100 x 0.90 = 90 100 + 90 = 190
It has increased by 9, 9 is 10% of 90 so it has increased by 10%. 99 is therefore 110% of 90. Formula: (99 - 90) / 90 = 0.1, or 10%