reduce to和reduce by有啥区别

educe to减少到……
reduce...to...把……减至……
be reduced by （被动形式）减少了……
如：
reduce to 5 (减少到5)
be reduced by 5/ 5% (减少了5/减少了5%)

reduce to 是下降到一定的程度，相当于减法的答案
reduce by 是下降了，就相当于减数

reduce to是减少到了多少]the farmer workers reduce to 60%今年农民出来打工的人数为往年的60%。reduce by是减少了多少the farmer workers reduce by 6%今年农民出来打工的比往年减少6%.reduce to还有沦为...的意思