-23.38% is the change from 231 to 177
Calculation steps:
[( 177 - 231 ) ÷ 231] x 100 = -23.38%
Formula
Percentage change = [(177 - 231) / 231] x 100
Subtract the new number by the original number
177 - 231 = -54
-54 ÷ 231 = -0.23376623376623376
-0.23376623376623376 x 100 = -23.38%