-45.52% is the change from 938 to 511
Calculation steps:
[( 511 - 938 ) ÷ 938] x 100 = -45.52%
Formula
Percentage change = [(511 - 938) / 938] x 100
Subtract the new number by the original number
511 - 938 = -427
-427 ÷ 938 = -0.4552238805970149
-0.4552238805970149 x 100 = -45.52%