-38.32% is the change from 856 to 528
Calculation steps:
[( 528 - 856 ) ÷ 856] x 100 = -38.32%
Formula
Percentage change = [(528 - 856) / 856] x 100
Subtract the new number by the original number
528 - 856 = -328
-328 ÷ 856 = -0.38317757009345793
-0.38317757009345793 x 100 = -38.32%