jM|<div class="post">The formula is based on the time it takes to generate 2016 blocks. The difficulty is multiplied by 14/(actual days taken). For instance, this time it took 9.4 days, so the calculation was 14/9.4 = 1.49. Previous difficulty 2.53 * 1.49 = 3.78, a 49% increase. <br/><br/>I don't know what you're talking about accepting easier difficulties.</div>
https://whatsonchain.com/tx/918052d25c860641fca82f24abdc52f922e868231042e28ca28fabb35dff7b0b