-84.8% is the change from 513 to 78
Calculation steps:
[( 78 - 513 ) ÷ 513] x 100 = -84.8%
Formula
Percentage change = [(78 - 513) / 513] x 100
Subtract the new number by the original number
78 - 513 = -435
-435 ÷ 513 = -0.847953216374269
-0.847953216374269 x 100 = -84.8%