mutate</a></span><span class="op">(</span>growth <span class="op">=</span> <span class="fl">100</span> <span class="op">*</span> <span class="op">(</span><span class="va">OBS_VALUE</span> <span class="op">/</span> <span class="fu">dplyr</span><span class="fu">::</span><span class="fu"><a href="https://dplyr.tidyverse.org/reference/lead-lag.html" class="external-link">lag</a></span><span class="op">(</span><span class="va">OBS_VALUE</span><span class="op">)</span> <span class="op">-</span> <span class="fl">1