-49.33% is the change from 815 to 413
Calculation steps:
[( 413 - 815 ) ÷ 815] x 100 = -49.33%
Formula
Percentage change = [(413 - 815) / 815] x 100
Subtract the new number by the original number
413 - 815 = -402
-402 ÷ 815 = -0.49325153374233127
-0.49325153374233127 x 100 = -49.33%