-34.29% is the change from 840 to 552
Calculation steps:
[( 552 - 840 ) ÷ 840] x 100 = -34.29%
Formula
Percentage change = [(552 - 840) / 840] x 100
Subtract the new number by the original number
552 - 840 = -288
-288 ÷ 840 = -0.34285714285714286
-0.34285714285714286 x 100 = -34.29%