Okay, so, 135% is really ̲1̲3̲5̲ ̲ , which is equal to 1.35.
100
So we can multiply 1.35 by 70.
1.35*70 = 94.5
this works because 100% of 70 is 70,
1.35*70=70
the .35 means that you have to add .35 more as well.
So it has to be correct.
Hope I helped.