If you would like to know what percent less than 35 is 25, you can calculate this using the following steps:
x% of 35 is 25
x% * 35 = 25
x/100 * 35 = 25 /*100/35
x = 25 * 100 / 35
x = 71.429
x = 71.43%
100% - 71.43% = 28.57%
Result: 28.57% less than 35 is 25.