-38.24% is the change from 850 to 525
Calculation steps:
[( 525 - 850 ) ÷ 850] x 100 = -38.24%
Formula
Percentage change = [(525 - 850) / 850] x 100
Subtract the new number by the original number
525 - 850 = -325
-325 ÷ 850 = -0.38235294117647056
-0.38235294117647056 x 100 = -38.24%