-40.87% is the change from 526 to 311
Calculation steps:
[( 311 - 526 ) ÷ 526] x 100 = -40.87%
Formula
Percentage change = [(311 - 526) / 526] x 100
Subtract the new number by the original number
311 - 526 = -215
-215 ÷ 526 = -0.40874524714828897
-0.40874524714828897 x 100 = -40.87%