37.2857
130.5
261
If 1263 = 100% then to calculate what percentage of that 21 is we need to multiply 21 by 100 and then divide it by 1263 21 x 100 = 2100. 2100 ÷ 1263 = 1.6627% which is 1.67% correct to two decimal places.
261/1
87
37.2857
237.2727
0.0192
261.5
130.5
0.0038
261
1263 - 769 = 494
2032
1 x 1263, 3 x 421, 421 x 3, 1263 x 1
261