for appium 1.7.2 you have to use absolute co-ordinates.
below code works for me, hope will help u
public void swipeRightToLeft() {
Dimension size = webDriver.manage().window().getSize();
int startx = (int) (size.width *0.94);
int endx = (int) (size.width *0.24);
int starty = size.height / 2;
int finalendx = startx-endx;
int endy = 0;
(new TouchAction(webDriver)).press(point(startx,starty)).moveTo(point(-finalendx,endy)).release().perform();
}