如题
想请教一下，我在写作时遇到的问题，请人批改后被注记
下面两句话有文法错误，希望各位帮忙指出，感谢
Despite the two figures staying static between 1950 and 1954,
both of them started from 1920 had the opposite trends and
balanced perfectly at 50% in 2000.
In 2015, those figures had a different pattern decreasing the
gap by nearly 10%.